A technique to measure cleaning performance, using particle counting, in an electrophotographic process is reviewed. Steps to transform a post cleaning area tape sample into a visual, image while minimizing external noise factors, are outlined. Once presented to the image analyzer, examples of samples manipulated to enhance the residual toner particles using a high gauss filter are illustrated. The number of particle counts needed for each sample to provide some type of statistical significance is discussed. This is followed by an explanation of how these components were integrated into a short computer program to further minimize amount of time the measurement involves. The final element of this technique, correlating the collected data to cleaning performance, is examined considering both its benefits and limitations as a measurement tool.
Michelina Molongoski, James Maher, "Measuring Cleaning Performance in an Electrophotographic Process" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP15), 1999, pp 601 - 603, https://doi.org/10.2352/ISSN.2169-4451.1999.15.1.art00057_2